Type-writing machine



(No Medal.) 2 Sheets-Sheet 1.

H. .H. UN-Z.- TYPE WRITING MACHINE.

No. 490,235. Patented Jan. 17, 1893.

WITNESSES:

(No Model.) 2 vSheetsSheet 2.

H. H'. U-NZ; I TYPE WBIITING MAGHINB. No. 490,235. Patented Jan. 17,-1893.

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UNITED STATES PATENT HENRY II. UN Z, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR TO THE NATIONAL TYPE WRITER COMPANY, OF PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 490,235, dated January1'7, 1893..

Application filed January 23, 1889. Serial No. 297,257. (No model.)

To all whom it may concern:

Be it known that I, HENRY H. UNZ, a citizen of the United States, and aresident of the city and county of Philadelphia, State of Pennsyl-Vania, have invented a new and useful Improvement in Type-l/VritingMachines, of which the following is a true and exact description, duereference being had to the drawings which accompany and form part ofthis specification.

My invention relates more especially to what are known as directoperating keys and type bars of a type-writer, and consists in a novelform of type bar, and also a novel connection of the various partswhereby a more perfect result is obtained, and also to the arrangementof the plates of the machine in such a manner that the type operatingend of the key is guided during its movement.

In the drawings; Figure l, is a central section through the key board,also showing platen. Fig. 2 is a side View of direct operating key. Fig.3, is an end view of Fig. 2, toward the outer end of the machine. Fig.4, is a bottom end view of Fig. 2. Fig.5, a View of modified form ofFig. 2. Fig. 6, a View of inner arm ot'Fig. 5. Fig. 7, a View of myimproved type bar. Fig. 8, is a front View of my improved type bar. Fig.9, is aside view of type bar. Fig. 10, is a sectional view through thetype bar near the pivotal point. Fig. 11, is a section through the typebar at :c-;v, Fig. 9. Fig. 12, is a section of type bar on line yy, Fig.9. Fig. 13, is a section of type bar at z-z. Fig. lat, asection ofmodified form of type bar, (the section being taken on the type bar atthe position yy, Fig. 9.) Fig. 15, is an upper plan view of machineshowing serrations in plates, the left hand portion showing serrationsin both plates, while the right hand portion is broken away showing thatportion of top plate removed and serrations existing in the lower plateonly.

Similar letters denote similar parts through,

out the drawings.

A represents the platen. B, the type bar.

0 the type bar hanger. D, the direct operating key. E, the upper plateof the machine. E, the lower plate of the machine. support for the typebar hanger.

F, the

The direct operating key, D, is formed of the two arms d, (Z and the rodor bar d, which connects these arms. The type bar is connected to thearm 61 and the operating finger key to the arm cl. The arm (1 may be aflat bar as shown in Figs. 1, 2, and 3, or may be a wire as shown inFig. 5. The arm d is connected to the rod or bar d by a pivot connectionas shown in Figs. 1 and 2, or if awire be used, the end of the wire isbent over into a hook so that it can be passed over the end of theconnecting bar (1. This enables the type bar carrying arms to have aslight movement on the point where it is joined to the connecting bar,and also allows these arms (1 to be separated from the connecting rod orbar d. My improved type bar has lateral projections from the main bodyof the type bar, thus forming a truss and giving rigidity to the typebar without greatly increasing its bulk, and as the strain decreasesdirectly with the distance from the pivotal point of the type bar, I mayconstruct this truss portion so that it shall vanish to a point at ornear the lower end of the type bar.

The plates E, and E have serrations, S, at the points where the type barcarrying arms (Z of the direct operating keys, pass through them, thusforming guides to prevent a too great play of these arms 01 If desired,the serrations may exist in only one plate, in which case the otherplate is cut away at the points where the type bar operating arms extendupward. As may be seen, these serrations extend to the inner end of theplates E, E, thus allowing a ready removal of the type bar operatingarms (Z without removing any other part of the machine. In the righthand portion of Fig. 1 is shown a View Where these serrations exist inonly one of the plates, the other plate being cut away.

Having now fully described my invention, what I claim and desire toprotect by Letters Patent, is 5- 1. In a typewriting machine, incombination, a direct operating key having two vertical arms and a rodor bar connecting said arms, a type bar, said type bar being connectedto the upper end of the inner vertical arm and said connecting rod orbar being loosely connected to the lower portion of said inner arm.

2. In a typewriting machine, in combination, a direct operating keyhaving two vertical arms, a rod, or bar connecting said arms, a type barconnected to the inner vertical arm, a plate, serrations in the innerend of said plate adapted to receive and guide the inner vertical arm ofsaid direct operating key.

3. In a typewriting machine, in combination, a direct operating keyhaving two vertical arms and a rod or bar connecting said arms, a typebar connected to the inner vertical arm, plates E and E, serrations insaid plates at their inner ends adapted to receive Witnesses:

G. I. HARDING, t ERNEsT HOWARD HUNTER.

